﻿// Spun AJAX Framework
// Copyright (C) 2008 Blake Hegerle
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program.  If not, see <http://www.gnu.org/licenses/>.

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace Formality.Parsing.ContextFree.LR
{
    public class Action : Pair<ActionType, int>
    {
        public Action(ActionType ActionType, int Context)
        {
            First = ActionType;
            Second = Context;
        }
        public Action(ActionType ActionType)
        {
            First = ActionType;
        }

        public ActionType ActionType { get { return First; } }
        public int Context { get { return Second; } }

        public override string ToString()
        {
            if (ActionType == ActionType.Accept)
                return "a";
            else if (ActionType == ActionType.Reduce)
                return "r" + Context;
            else if (ActionType == ActionType.Shift)
                return "s" + Context;
            else
                return "";
        }
    }
}
